Species co-occurrence and population dynamics in annual fish assemblages in the lower Río Uruguay basin
The result's identifiers
Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F68081766%3A_____%2F19%3A00503796" target="_blank" >RIV/68081766:_____/19:00503796 - isvavai.cz</a>
Result on the web
<a href="http://dx.doi.org/10.1007/s10641-019-00854-x" target="_blank" >http://dx.doi.org/10.1007/s10641-019-00854-x</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.1007/s10641-019-00854-x" target="_blank" >10.1007/s10641-019-00854-x</a>
Alternative languages
Result language
angličtina
Original language name
Species co-occurrence and population dynamics in annual fish assemblages in the lower Río Uruguay basin
Original language description
Austrolebias is a genus of annual killifishes from subtropical and temperate grasslands of South America. They coexist in assemblages of up to five species in pools with variable connection to permanent water bodies and complete their entire life cycle within 1 year, terminated by summer desiccation of their habitat. To quantify community and population characteristics of Austrolebias assemblages, we sampled a set of 18 pools in the lowlands of the confluence of Río Negro and Río Uruguay in western Uruguay, with 16 sampling trips conducted over the entire seasonal cycle in 2015. Austrolebias bellottii was a ubiquitous and generalist species, A. nigripinnis was more common in pools influenced by active floodplain, A. elongatus (a large predatory species) was rare overall, and four A. alexandri was found only in two pools. Unexpectedly, many pools desiccated in winter (mid season) and some of them supported a second cohort after their reinundation. Fish abundance and fish density declined steadily prior to pool desiccations. There were indications that adult A. bellottii can survive a short period of habitat desiccation in wet mud, leading to coexistence of an older A. bellottii cohort with a younger A. nigripinnis cohort. Males disappeared from populations at a higher rate, especially towards the end of the season. The overall lifespan of both common species was up to 7 months in pools that did not experience midseason desiccation. This study provides fundamental demographic parameters for the annual fish in this region.
Czech name
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Czech description
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Classification
Type
J<sub>imp</sub> - Article in a specialist periodical, which is included in the Web of Science database
CEP classification
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OECD FORD branch
10618 - Ecology
Result continuities
Project
<a href="/en/project/GBP505%2F12%2FG112" target="_blank" >GBP505/12/G112: ECIP - European Centre of Ichtyoparasitology</a><br>
Continuities
I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace
Others
Publication year
2019
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů
Data specific for result type
Name of the periodical
Environmental Biology of Fishes
ISSN
0378-1909
e-ISSN
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Volume of the periodical
102
Issue of the periodical within the volume
4
Country of publishing house
NL - THE KINGDOM OF THE NETHERLANDS
Number of pages
12
Pages from-to
569-580
UT code for WoS article
000463818600004
EID of the result in the Scopus database
2-s2.0-85061902751